Self-threading shuttle.



A. DION.

SELF THRBADING SHUTTLE.

APPLICATION FILED AUG. 24, 1912. 1,05 1,704. Patented Jan. 28, 1913.

2 SHEETS-$113111 1.

Attorneys A. DION. SELF THREADING SHUTTLE.

APPLICATION FILED AUG. 24, 1912.

1,051,704. Patented Jan.28, 1913.

2 SHEETS-SHEET 2' Witnesses: Inventor Attorney:

ARSENE DION, 0F BERKELEY, RHODE ISLAND.

SELF-THREADING SHUTTLE.

Specification of Letters Patent.

Patented Jan. 28, .1913.

Application filed August 24, 1912. Serial No. 716,799.

To all whom it may concern Be it known that I, Ansimn DION, a subject ofthe King of Great Britain, residing at Berkeley, Rhode Island, UnitedStates of America, have invented certain new and useful Improvements inSelf-Threading Shuttles; and I do hereby declare that the following is afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

The invention to be hereinafter described relates to self threadingshuttles.

In order to more clearly disclose the construction, operation, and useof the invention, reference should be had to the accompanying drawingsforming part of the present application.

Throughout the several figures of the drawings like reference charactersdesignate the same parts.

In the drawings: Figure 1 is a top plan view of the invention, with onecover plate removed; Fig. 2 is a partial side elevation;

- Fig. 3 is a similar view of the opposite side;

Fig. 1 is a side elevation of cover plate (3; Fig. 5 is a left hand sideelevation of Fig. 4-; Fig. 6 is a view similar to Fig. 1, with bothcover plates removed; Fig. 7 is a horizontal, longitudinal, crosssection on line 7-7 of Fig. 2, looking in the direction of the arrows;Fig. 8 is a top plan view of the invention complete; and Fig. 9 is abottom plan view of cover plate The main objects of the invention are toprovide a simple, e'tlicient, economical, compact, and durable selfthreading shuttle in which the thread will be positively prevented fromslipping out of its guide groove.

Referring to the drawings in detail, 1 indicates the shuttle bodyprovided with the usual diagonal thread slot and lateral kerf leadingfrom the slot to the shuttle eye. The eye passage leads directly intothe bot tom of a recess 2 in the body of the shuttle. The thread passesfrom the bobbin to this recess by way of the tubular guide or bore 3.The bore 3 is formed in the shuttle body and extends longitudinallythereof and in line and concentric with the bobbin end so that thethread may be drawn direct from the bobbin without friction. The upperwall of the bore is provided with a longitudinal slot at extending itsentire length and adapted to guide the thread from the bobbin to theinterior of the bore.

Two cover plates 5 and 6 overlie the top wall of the bore and may beremo-vably secured in place by screws or the like as more clearly shownin Fig. 8. The plate 6 is provided with a foot portion 7 to tit into thebottom of the recess 2, and a part 8 connecting the foot 7 with the bodypart of the cover plate. The two plates 5 and (i are so arranged that avery narrow space is left between them and directly above the slot 4 sothat entrance of the thread to the bore '3 will not be interfered withby the cover plates. It will be noticed that. the part 8 extendscompletely across the perpendicular wall of recess 2 and overlies theend of bore 3; also, that the foot 7 completely overlies the entirebottom wall of the recess 2. (onsequently, the part 8 is provided with aperpendicular slot 9 terminating in an eye 10, the slot being alinedwith the end of slot 4- while the eye is alined with the end of the bore3. When assembled, that portion of the foot 7 nearest the eye passagemust be slightly spaced from the bottom wall of the recess 2, of course.For this purpose, a shoulder 1.1 is provided. Part of the foot. portion7 rests upon this shoulder, leaving the free end and a part of one sideslightly spaced from the bottom of the recess. The foot 7 is providedwith a longitudinal slot 12 leading to an eye 13 which falls in linewith the eye passage, as shown in Fig. 8. In order to more easilyreceive the thread in the slot 12 from the diagonal slot of the shuttle,one side wall of the outer end of the slot 7 is beveled or rounded offso that the thread will slide freely about it and into the slot. Theother end wall is left straight and abrupt to prevent the threadslipping out of the slot and around the end of the foot 7, as clearlyshown in Fig. 8.

\ssuming the plates 5 and 6, with the parts 7 and 8, to be in theposition shown in Fig. 8, the threading of the shuttle will be effectedby simply drawing the thread forward between the plates 5 and (3,downwardly through the diagonal cut or slot, and then rearwardly in thelateral kerf until it is seated in the shuttle eye, as shown in full indotted lines in Fi 8.

The thread retaining device comprises a spring pressed lever 14. mountedto swing directly across the slot 4 between the top wall of the bore 3and the under face of cover plate 5. It is provided with a projeetingfinger 15 which extends into a notch 6 formed in the under face of thecover plate 6, to receive it. The cover plate 5 is cut out as at 5 topermit free swinging movement of the lever. The lever is provided wit-ha short sleeve or tube 16 adapted to receive a pivot pin or post 17seated in a recess 18 extending downwardly in the shuttle body at oneside of the bore 3. From this recess an opening 18 leads through theshuttle wall. An operating finger piece 20 projects from the sleeve 15through the opening. By forcing the finger piece 20 toward the left inFigs. 1, 2, 6, and 7, the lever may be swung back against the pressureof spring :21, to inoperative position, for threading the shuttle. Assoon as the finger piece is released, the lever will swing to theposition of Fig. 1 and prevent accidental dislodgment of the thread. 7

The inner ends of the cover plates are curved, of course, to guide thethread toward the space between their longitudinal walls, for entranceinto the slot 4.

It is thought that the operation and use of the invention will be clearfrom the preceding detailed description.

Having thus fully described my invention, what I claim as new and desrieto secure by Letters Patent is:

1. In combination with a self threading shuttle having a longitudinallyslotted threadbore, a recess in one side of the body, and an openingleading outwardly from the recess through the side wall, a threadretaining lever fulcrumed in said recess and provided with a fingerpiece projecting through said opening, said lever being adapted toextend across said slot to retain the thread in the bore, and means fornormally maintaining said lever in operative position.

2. In combination with a self threading shuttle having a longitudinallyslotted thread bore, a recess in one side of the body, and anoDeningleading outwardly from the recess through the side wall, a threadretaining lever fulcrumed in said recess and provided with a fingerpiece projecting through said opening, said lever being adapted toextend across said slot to retain the thread in the bore, and a springengaging said lever and normally maintaining it in operative position.

3. In combination in a shuttle body provided with a recess in one endand an eye passage leading therefrom, said body having a longitudinallyslotted thread bore leading to said recess, said body being alsoprovided with a diagonal slot and a lateral kerf leading from saidrecess to said eye passage; a horizontal cover plate provided with afoot having a longitudinal slot ex tending to the free end thereof andterminating in an eye having a vertical connecting portion similarlyprovided with a slot terminating in an eye, a shoulder for spacing saidfoot from the bottom of the aforesaid recess, a second horizontal coverplate parallel with and in the same plane as the first cover plate andspaced therefrom to present a slot or narrow passage direct-1y above andin line with the slot of the thread bore, a thread retaining levermounted beneath said second cover plate and adapted to swing across theslotbetween the cover plates, and means for swinging said lever toinoperative position. In witness whereof I have hereunto set my hand inthe presence of two witnesses. ARSENE DION. Witnesses AME'miE Pmonvon,ARsisNE BRUNELLE.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

